Fluorescent graphene oxide derived from carbonized citric acid for copper(Ⅱ) ions detection

作     者：Wen-Dan Li Xiang-Yu Zeng Gang-Yu Lv Zhen-Hui Liang Qi-Jie Liu Wan-Qi Fu Jiu-An Zhang Yan-Xian Feng Hao-Yi Wu Wen-Dan Li;Xiang-Yu Zeng;Gang-Yu Lv;Zhen-Hui Liang;Qi-Jie Liu;Wan-Qi Fu;Jiu-An Zhang;Yan-Xian Feng;Hao-Yi Wu

作者机构：School of Physics and Optoelectronic EngineeringGuangdong University of TechnologyHEMCGuangzhou 510006China School of Biotechnology and Health ScienceWuyi UniversityJiangmen 529020China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2021年第40卷第6期

页      面：1443-1450页

核心收录：

学科分类：082803[工学-农业生物环境与能源工程] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0828[工学-农业工程] 070302[理学-分析化学] 0804[工学-仪器科学与技术] 0703[理学-化学] 

基　　金：financially supported by One-Hundred Young Talents project from Guangdong University of Technology (No.220413182) 

主　　题：Graphene oxide Fluorescence Copper(Ⅱ)detection 

摘      要：Fluorescent graphene oxide(GO) nanoparticles were obtained from the thermal carbonization of citrate *** on the synthesizing temperature,the size of GO varied from several to several hundred *** to the confinement from the size,green and blue emissions at around 504 and 450 nm were observed from the GO *** emissions could be dynamically quenched by titrating against copper(Ⅱ)(Cu^(2+)) ions,and the emission intensity was reduced exponentially as a function of Cu^(2+)*** quenching mechanism was ascribed to the bridging of the surface-COOH andOH groups by Cu^(2+),which restricted the vibration of edge atoms or clusters and reduced the number of luminophores of GO *** a result,the concentration of Cu^(2+)was detectable with the fluorescent intensity of GO.